Chapter 2. Architecture and technical overview
55
Each riser card in the system must be populated with at least one pair of DIMMs.
Figure 2-9 shows the physical memory DIMM topology for Power 750 and Power 760
connected to one DCM.
Figure 2-9 Physical memory DIMM topology for a Power 750 and Power 760 DCM
Three DCMs
768 GB
1536 GB
Four DCMs
1024 GB
2048 GB
No memory CoD: The Power 750 and Power 760 systems do not support capacity on
demand (CoD) for memory.
Number of DCMs
Power 750
Power 760
DCM
MC: Memory Controller
BC: Memory Buffer
Memory Riser Card #2
DDR3 RDIMM Slot 2
DDR3 RDIMM Slot 1
DDR3 RDIMM Slot 8
DDR3 RDIMM Slot 7
DDR3 RDIMM Slot 4
DDR3 RDIMM Slot 3
DDR3 RDIMM Slot 6
DDR3 RDIMM Slot 5
BC-B
BC-A
POWER 7+
Chip 1
MC1
Channel D
MC1
Channel C
POWER 7+
Chip 0
MC0
Channel B
MC0
Channel A
Memory Riser Card #1
DDR3 RDIMM Slot 2
DDR3 RDIMM Slot 1
DDR3 RDIMM Slot 8
DDR3 RDIMM Slot 7
DDR3 RDIMM Slot 4
DDR3 RDIMM Slot 3
DDR3 RDIMM Slot 6
DDR3 RDIMM Slot 5
BC-B
BC-A
